Distribution and influence factors of atmospheric ammonia in Hangzhou
Received date: 2013-02-21
Revised date: 2013-10-08
Online published: 2014-05-15
叶贤满 , 焦荔 , 徐昶 , 洪盛茂 , 沈建东 , 姚晗 , 张天 , 何纪平 . 杭州大气NH3分布现状及其影响因子探讨[J]. 中国科学院大学学报, 2014 , 31(3) : 374 -379 . DOI: 10.7523/j.issn.2095-6134.2014.03.012
Ammonia samples were collected at 193 sites in Hangzhou in September 2010 and in March 2011 using Italy Kerry Ring passive sampling device. The concentrations of NH4+ were measured by ion chromatography. Temporal and spatial distributions of ammonia were calculated by ARCGIS interpolation. The results show that the average concentration of ammonia was 7 μg/m3 in Hangzhou, which did not exceed the health standards for the design of Chinese industrial enterprise of 200 μg/m3. Ammonia concentration was higher in the east part of the city than in the west and was higher in September than in March. Meteorological factors and source strength of ammonia are the main factors affecting atmospheric ammonia distribution.
Key words： Hangzhou; ammonia; temporal and spatial variation
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